The English subtasks of the SemEval CQA [1]}, [2]} consist of Question-Question Similarity, Question-Comment Similarity, and Question-External Comment Similarity.
In this study, we focus on the core subtask of Question-Question similarity, defined as follows: Given a question, rank other relevant questions by their relevancy to that question. This proved to be a difficult task in both SemEval-16 and SemEval-17 as it is the one with the least amount of data available. The baseline was the ranking retrieved by performing a Google search, which proved to be a strong baseline beating a large portion of the systems submitted.
